[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Javatc update to version 10.j



Original poster: "Barton B. Anderson" <bartb@xxxxxxxxxxxxxxxx>

Hi All,

I updated Javatc with a minor update (just a clean-up item)

http://www.classictesla.com/java/javatc.html

At the top of the form there is a new input box for Ambient Temperature and drop down for Centigrade or Fahrenheit. The default is 68 Fahrenheit (20 Centigrade). This effects only the DC Resistance value.

The download version is also upgraded and available at the web site.

For those who are interested, the equation for DC resistance with ambient temp considerations:

DCR = ((4 x (wire length) x 6.787 x 1e-7) / ((wire diameter)^2 x PI)) x (1 + (C-20) x 0.0039)
where
   DCR = DC Resistance in ohms
   wire length & wire diameter = inches
   C = degrees Centigrade
   PI = 3.14159....

Temp Unit conversion:

To convert from Fahrenheit to Centigrade:    (fahrenheit-32)*(5/9)
To convert from Centigrade to Fahrenheit:    (centigrade/(5/9)+32)

Overall, a very minor change. Maybe a couple ohms + or -. It was partially written in the code already, I just decided to keep it and finish up the implementation.

Take care,
Bart